R
Ryan Underwood
- Jan 1, 1970
- 0
Hi,
I just acquired a Lab-Volt model 189 bench supply, 1966 vintage. It has a
passthrough AC output, a variac output, and a variable DC output.
Unfortunately, the variable outputs do not work (0 voltage independent of
knob setting). The pass through output does work though.
The fuse is a screw-in type, black thumb screw reads "Fuse" and when it pulls
out, there is a loose metal cylinder around the end of the fuse. I have no
idea how to test this type of fuse or even what it is called.
Anyone have pointers where to get started on this thing? The construction
appears to be nothing more than a bunch of transformers and a knob. I'm not
familiar with these variable type supplies.
Thanks.
I just acquired a Lab-Volt model 189 bench supply, 1966 vintage. It has a
passthrough AC output, a variac output, and a variable DC output.
Unfortunately, the variable outputs do not work (0 voltage independent of
knob setting). The pass through output does work though.
The fuse is a screw-in type, black thumb screw reads "Fuse" and when it pulls
out, there is a loose metal cylinder around the end of the fuse. I have no
idea how to test this type of fuse or even what it is called.
Anyone have pointers where to get started on this thing? The construction
appears to be nothing more than a bunch of transformers and a knob. I'm not
familiar with these variable type supplies.
Thanks.